Patch by Andreas Enge <andreas@enge.fr>.
Remedy the absence of ldconfig and explicitly create an additional symbolic
link to the flint library, as discussed privately with upstream.

diff -r -u flint-2.5.2.orig/configure flint-2.5.2/configure
--- flint-2.5.2.orig/configure	2015-08-13 18:16:22.000000000 +0200
+++ flint-2.5.2/configure	2015-08-14 17:38:14.316284437 +0200
@@ -714,6 +714,7 @@
 echo "FLINT_SHARED=$SHARED" >> Makefile
 echo "FLINT_LIB=$FLINT_LIB" >> Makefile
 echo "FLINT_LIBNAME=$FLINT_LIBNAME" >> Makefile
+echo "FLINT_MAJOR=$FLINT_MAJOR" >> Makefile
 echo "FLINT_SOLIB=$FLINT_SOLIB" >> Makefile
 echo "EXEEXT=$EXEEXT" >> Makefile
 echo "PREFIX=$PREFIX" >> Makefile
diff -r -u flint-2.5.2.orig/Makefile.in flint-2.5.2/Makefile.in
--- flint-2.5.2.orig/Makefile.in	2015-08-13 18:16:22.000000000 +0200
+++ flint-2.5.2/Makefile.in	2015-08-14 17:38:50.584774817 +0200
@@ -118,6 +118,7 @@
 		$(LDCONFIG) -n "$(CURDIR)"; \
 	fi
 	ln -sf "$(FLINT_LIB)" "$(FLINT_LIBNAME)"; \
+	ln -sf "$(FLINT_LIB)" "$(FLINT_LIBNAME).$(FLINT_MAJOR)"; \
 
 libflint.a: $(OBJS) $(LIB_SOURCES) $(EXT_SOURCES) $(HEADERS) $(EXT_HEADERS) | build build/interfaces
 	$(AT)$(foreach ext, $(EXTENSIONS), $(foreach dir, $(filter-out %templates, $(patsubst $(ext)/%.h, %, $(wildcard $(ext)/*.h))), mkdir -p build/$(dir); BUILD_DIR=$(CURDIR)/build/$(dir); export BUILD_DIR; MOD_DIR=$(dir); export MOD_DIR; $(MAKE) -f $(CURDIR)/Makefile.subdirs -C $(ext)/$(dir) static || exit $$?;))
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<div class='path'>path: <a href='/guix/log/?id=e342f89b4c0b08fa59093c091c725ac961d01c40'>root</a>/<a href='/guix/log/build-aux?id=e342f89b4c0b08fa59093c091c725ac961d01c40'>build-aux</a>/<a href='/guix/log/build-aux/check-final-inputs-self-contained.scm?id=e342f89b4c0b08fa59093c091c725ac961d01c40'>check-final-inputs-self-contained.scm</a></div><div class='content'><table class='list nowrap'><tr class='nohover'><th class='left'>Age</th><th class='left'>Commit message (<a href='/guix/log/build-aux/check-final-inputs-self-contained.scm?id=e342f89b4c0b08fa59093c091c725ac961d01c40&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th></tr>
<tr><td><span title='2018-12-04 10:57:56 +0100'>2018-12-04</span></td><td><a href='/guix/commit/build-aux/check-final-inputs-self-contained.scm?id=0bc02becca1b4b0b3eddb7972567a75f0d464b72'>Remove most references to hydra.gnu.org.</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>